During March--July 2003, we obtained 1.8A resolution
time-series spectra of the subdwarf B star variable
PG1627+017, as part of a multiple site spectroscopic
campaign. This target was selected because it is the
brightest and has the highest amplitude variations among the
recently discovered long period subdwarf B pulsators. It is
also the coolest known example of this new class of
pulsators, which, as a group, are cooler than the previously
discovered short period subdwarf B star pulsators (i.e. the
EC14026 stars). We present preliminary radial velocity (RV)
mode detections and wavelength dependent amplitude
variations of PG1627+017. At least two modes have been
detected in the RV power spectrum. This is the first
spectroscopic detection of pulsational modes in a long
period subdwarf B star.